Fujitsu PRIMERGY BX400 S1 Operating Manual page 91

Hot-plug components
Figure 23: Installing a dummy server blade module
Ê Push the dummy server blade into the empty slot until it clicks into place.
Removing a dummy server blade module
Ê Push up the release lever (1) and pull the dummy module out of the slot by
its handle.
Operating Manual 91
BX400 S1